package com.changgou.file.controller;

import com.changgou.entity.Result;
import com.changgou.entity.StatusCode;
import com.changgou.file.util.FastDFSClient;
import com.changgou.file.util.FastDFSFile;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.PostMapping;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.multipart.MultipartFile;

@RestController
@RequestMapping("/file")
public class FileController {


    @PostMapping("/upload")
    public Result uploadFile(MultipartFile file) {

        try {
            // 判断文件是否存在
            if (file == null){
                throw new RuntimeException("文件不存在");
            }

            // 获取文件的完整名称
            String originalFilename = file.getOriginalFilename();
            // 判断文件是否为null
            if (StringUtils.isEmpty(originalFilename)){
                throw new RuntimeException("文件不存在");
            }
            
            // 获取文件的扩展名
            String extName = originalFilename.substring(originalFilename.lastIndexOf(".") + 1);

            // 获取文件内容
            byte[] bytes = file.getBytes();

            // 创建文件上传的封装对象
            FastDFSFile fastDFSFile = new FastDFSFile(originalFilename,bytes,extName);

            // 上传文件，返回文件id
            String[] upload = FastDFSClient.upload(fastDFSFile);

            // 获取文件的路径
            String url = FastDFSClient.getTrackerUrl() + upload[0] + "/" + upload[1];

            return new Result(true, StatusCode.OK,"文件上传成功",url);



        } catch (Exception e) {
            e.printStackTrace();
        }


        return new Result(false, StatusCode.ERROR,"文件上传失败");
    }

}
